[R] lattice : superpose symbols with a great many points

[Christoph Scherber]

Dear Laurent

for numeric x variables, you could try jitter:

xyplot(y~jitter(x,0.5))

Cheers
Christoph


Am 20.06.2014 21:45, schrieb Laurent Rhelp:
> Hi,
>
>   I like to use with xyplot (package lattice) the groups argument and 
> superpose.symbol to compare several curves. But, when there are a 
> great many points, the symbols are very close and the graph becomes 
> unreadable. Would there be an argument  or a tip not to draw all the 
> symbols, for example the symbols could be drawn only every x points, x 
> given as an argument ?
>
> Thanks
> Best regards
> Laurent
>
>
>
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